My water broke 38wks2days, but I didn't go I'm till the next day

My water broke 38wks2days, but I didn't go I'm till the next day....& I didn't know it broke. I stayed & they help induce my labor w a medication called "credivil" it helps you dilate & contract. After having it in for 5hours I dilated to 4.80 cm & after that it went by fast! I was in active labor for 3+ hours, he was born @ 620pm & weighed 7lbs 8oz, 21inches long!